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CA2120528C - Systeme de synchronisation et d'egalisation pour les emissions a diffusion simultanee - Google Patents

Systeme de synchronisation et d'egalisation pour les emissions a diffusion simultanee

Info

Publication number
CA2120528C
CA2120528C CA002120528A CA2120528A CA2120528C CA 2120528 C CA2120528 C CA 2120528C CA 002120528 A CA002120528 A CA 002120528A CA 2120528 A CA2120528 A CA 2120528A CA 2120528 C CA2120528 C CA 2120528C
Authority
CA
Canada
Prior art keywords
time
transmission
timing signals
correction factor
system timing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002120528A
Other languages
English (en)
Other versions
CA2120528A1 (fr
Inventor
Jan Peter Ii Vanderspool
Steven Arthur Goreham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of CA2120528A1 publication Critical patent/CA2120528A1/fr
Application granted granted Critical
Publication of CA2120528C publication Critical patent/CA2120528C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radio Relay Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CA002120528A 1991-10-04 1992-08-24 Systeme de synchronisation et d'egalisation pour les emissions a diffusion simultanee Expired - Fee Related CA2120528C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/771,911 1991-10-04
US07/771,911 US5261118A (en) 1991-10-04 1991-10-04 Simulcast synchronization and equalization system and method therefor

Publications (2)

Publication Number Publication Date
CA2120528A1 CA2120528A1 (fr) 1993-04-15
CA2120528C true CA2120528C (fr) 1996-11-12

Family

ID=25093316

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002120528A Expired - Fee Related CA2120528C (fr) 1991-10-04 1992-08-24 Systeme de synchronisation et d'egalisation pour les emissions a diffusion simultanee

Country Status (8)

Country Link
US (1) US5261118A (fr)
EP (1) EP0606272B1 (fr)
JP (2) JP3451585B2 (fr)
KR (2) KR960012481B1 (fr)
AT (1) ATE161669T1 (fr)
CA (1) CA2120528C (fr)
DE (1) DE69223797T2 (fr)
WO (1) WO1993007682A1 (fr)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239671A (en) * 1990-11-13 1993-08-24 Pagemart, Inc. Simulcast satellite paging system with provision for signal interruption
US5734981A (en) 1991-01-17 1998-03-31 Highwaymaster Communications, Inc. Method and apparatus for call delivery to a mobile unit
JPH0575526A (ja) * 1991-02-25 1993-03-26 Pagemart Inc 適応呼出装置
US5666660A (en) * 1991-05-31 1997-09-09 Telefunken System for receiving a radio signal including multiple receiving units
US5517680A (en) * 1992-01-22 1996-05-14 Ericsson Inc. Self correction of PST simulcast system timing
US5539810A (en) 1992-01-27 1996-07-23 Highwaymaster Communications, Inc. Data messaging in a communications network
US6295449B1 (en) 1992-01-27 2001-09-25 @Track Communications, Inc. Data messaging in a communications network using a feature request
US6009330A (en) 1992-01-27 1999-12-28 Highwaymaster Communications, Inc. Method and apparatus for call delivery to a mobile unit
US5454027A (en) 1992-01-27 1995-09-26 Hm Holding Corporation Phantom mobile identification number method and apparatus
JPH0629910A (ja) * 1992-07-09 1994-02-04 Nec Corp 無線基地局間同期方式
US6308077B1 (en) * 1992-10-02 2001-10-23 Motorola, Inc. Apparatus and method for providing synchronization of base-stations in a communication system
US5394437A (en) * 1992-10-20 1995-02-28 At&T Corp. High-speed modem synchronized to a remote CODEC
JP3166174B2 (ja) * 1993-07-12 2001-05-14 株式会社エヌ・ティ・ティ・ドコモ 局間位相同期方式
US5481258A (en) * 1993-08-11 1996-01-02 Glenayre Electronics, Inc. Method and apparatus for coordinating clocks in a simulcast network
US5438337A (en) * 1993-09-24 1995-08-01 Northrop Grumman Corporation Navigation system using re-transmitted GPS
US5469467A (en) * 1993-10-15 1995-11-21 At&T Corp. Method for synchronizing the reference frequency oscillator of a metallic-based microcell to a master oscillator
JP2710557B2 (ja) * 1994-04-26 1998-02-10 静岡日本電気株式会社 無線選択呼出受信機の時刻補正方式
US5542115A (en) * 1994-06-24 1996-07-30 Pioneer Tech Development Limited Paging method and apparatus
EP0719063B1 (fr) * 1994-07-06 2005-10-12 NTT DoCoMo, Inc. Systeme de communication mobile dans lequel un procede de correction de la frequence de la station de base est utilise
GB2321372B (en) * 1994-07-22 1998-11-25 Int Mobile Satellite Org Satellite communication method and apparatus
US5625640A (en) * 1994-09-16 1997-04-29 Hughes Electronics Apparatus for and method of broadcast satellite network return-link signal transmission
WO1996009713A1 (fr) * 1994-09-22 1996-03-28 Glenayre Electronics, Inc. Systeme de recherche de personnes synchronise
US5603079A (en) * 1994-10-03 1997-02-11 Motorola, Inc. Satellite-based messaging system transmitting during guard band of satellite-based telephone system and method of operation thereof
US5913170A (en) * 1994-11-16 1999-06-15 Highwaymaster Communications, Inc. Locating system and method using a mobile communications network
JP3192897B2 (ja) * 1994-12-02 2001-07-30 株式会社日立製作所 無線呼び出しシステム
CN1175333A (zh) * 1994-12-27 1998-03-04 艾利森公司 利用全球定位系统的联播的再同步改善
US5699275A (en) 1995-04-12 1997-12-16 Highwaymaster Communications, Inc. System and method for remote patching of operating code located in a mobile unit
US5694322A (en) 1995-05-09 1997-12-02 Highwaymaster Communications, Inc. Method and apparatus for determining tax of a vehicle
US5790939A (en) * 1995-06-29 1998-08-04 Hughes Electronics Corporation Method and system of frame timing synchronization in TDMA based mobile satellite communication system
US6011977A (en) * 1995-11-30 2000-01-04 Ericsson Inc. RF simulcasting system with dynamic wide-range automatic synchronization
US5732357A (en) * 1996-02-21 1998-03-24 Glenayre Electronics, Inc. Selective simulcast paging system
US5809397A (en) * 1996-02-29 1998-09-15 Motorola, Inc. Method and apparatus for system synchronization in a messaging system
KR0168797B1 (ko) * 1996-04-02 1999-02-01 김광호 기지국 송신기의 동시 송출 제어장치
US5896560A (en) * 1996-04-12 1999-04-20 Transcrypt International/E. F. Johnson Company Transmit control system using in-band tone signalling
US6049720A (en) * 1996-04-12 2000-04-11 Transcrypt International / E.F. Johnson Company Link delay calculation and compensation system
US5991309A (en) * 1996-04-12 1999-11-23 E.F. Johnson Company Bandwidth management system for a remote repeater network
US5828660A (en) * 1996-04-26 1998-10-27 Motorola, Inc. Multiple user communication system, device and method with overlapping uplink carrier spectra
JP3056084B2 (ja) * 1996-08-15 2000-06-26 静岡日本電気株式会社 無線選択呼出受信機
US6125125A (en) * 1996-10-18 2000-09-26 Symmetricom, Inc. Synchronization of TDMA cell sites
US6178334B1 (en) * 1998-11-17 2001-01-23 Hughes Electronics Corporation Cellular/PCS network with distributed-RF base station
US5873044A (en) * 1997-02-21 1999-02-16 Motorola, Inc. Method and apparatus in a radio communication system for synchronizing transmissions while maintaining full user traffic
US5953384A (en) * 1997-06-05 1999-09-14 Motorola, Inc. Automatic measurement of GPS cable delay time
JPH10341466A (ja) * 1997-06-10 1998-12-22 Nec Shizuoka Ltd 無線選択呼出受信機
US6539003B1 (en) * 1997-10-20 2003-03-25 Viasat, Inc. Method for acquisition and synchronization of terminals in a satellite/wireless TDMA system
JP4267092B2 (ja) * 1998-07-07 2009-05-27 富士通株式会社 時刻同期方法
JP3123991B2 (ja) * 1998-10-26 2001-01-15 静岡日本電気株式会社 無線選択呼出し受信機
US6400925B1 (en) * 1999-02-25 2002-06-04 Trw Inc. Packet switch control with layered software
DE19914355A1 (de) * 1999-03-30 2000-10-05 Wolfgang Schaefer Verfahren zur Synchronisation von Entfernten Uhren über Satellit an eine Zentrale Uhr
US6501808B1 (en) * 1999-04-29 2002-12-31 Northrop Grumman Corporation Apparatus and method for instantaneous reacquisition in a network system
US6542754B1 (en) * 1999-05-12 2003-04-01 Cisco Systems, Inc. Synchronizing clock signals in wireless networks
US6671250B1 (en) * 1999-08-17 2003-12-30 Qualcomm Incorporated Method for deep paging
US8363757B1 (en) 1999-10-12 2013-01-29 Qualcomm Incorporated Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
US6628673B1 (en) * 1999-12-29 2003-09-30 Atheros Communications, Inc. Scalable communication system using overlaid signals and multi-carrier frequency communication
US6807146B1 (en) 2000-04-21 2004-10-19 Atheros Communications, Inc. Protocols for scalable communication system using overland signals and multi-carrier frequency communication
US7397859B2 (en) * 2000-04-22 2008-07-08 Atheros Communications, Inc. Multi-carrier communication systems employing variable symbol rates and number of carriers
US7006468B1 (en) * 2000-07-26 2006-02-28 Qualcomm, Incorporated Page monitoring method and apparatus
US6917609B2 (en) * 2000-08-21 2005-07-12 Pctel Maryland, Inc. Method and apparatus for CDMA pn scanning at indoor and other obstructed locations
US7366518B2 (en) * 2000-12-01 2008-04-29 Lucent Technologies Inc. Supplemental channel sharing algorithm
US20020089946A1 (en) * 2001-01-05 2002-07-11 Hutchings Jonathon M. System and method for providing a timing reference for data transmissions in a satellite-based communications network
US6944188B2 (en) * 2001-02-21 2005-09-13 Wi-Lan, Inc. Synchronizing clocks across a communication link
WO2003047134A2 (fr) * 2001-11-28 2003-06-05 Bridgeco Ag Procede de synchronisation dans des reseaux
GB0130208D0 (en) * 2001-12-18 2002-02-06 Nokia Corp Synchronised window adaption
FR2834090B1 (fr) * 2001-12-24 2004-02-20 Bull Sa Procede et systeme de sauvegarde de l'horloge locale d'un perimetre informatique
JP2004194086A (ja) * 2002-12-12 2004-07-08 Nec Corp 移動通信システムと無線基地局制御システムおよび無線基地局制御方法
US8144810B2 (en) * 2003-02-19 2012-03-27 Csr Technology Inc. Serial radio frequency to baseband interface with programmable clock
JP2005323113A (ja) * 2004-05-07 2005-11-17 Matsushita Electric Ind Co Ltd 制御局装置及び基地局装置
US20070243414A1 (en) * 2004-05-26 2007-10-18 Hisayuki Miki Positive Electrode Structure and Gallium Nitride-Based Compound Semiconductor Light-Emitting Device
US7499423B1 (en) * 2004-06-10 2009-03-03 Cisco Technology, Inc. (Us) System and method for clock distribution and synchronization and radio location
US7545764B1 (en) * 2004-11-19 2009-06-09 Cypress Semiconductor Corporation Synchronized code recognition
EP1708413A1 (fr) 2005-03-29 2006-10-04 Lg Electronics Inc. Reconfiguration de cellules pour le service de diffusion/multidiffusion multimedia (MBMS)
US8626377B2 (en) 2005-08-15 2014-01-07 Innovative Global Systems, Llc Method for data communication between a vehicle and fuel pump
US9818120B2 (en) 2015-02-20 2017-11-14 Innovative Global Systems, Llc Automated at-the-pump system and method for managing vehicle fuel purchases
US7117075B1 (en) 2005-08-15 2006-10-03 Report On Board Llc Driver activity and vehicle operation logging and reporting
WO2007044564A2 (fr) * 2005-10-06 2007-04-19 Aviom, Inc. Procedes et systemes de gestion de gigue et de compensation de temps d'attente dans un systeme de communication de donnees par paquets
DE102006015393A1 (de) * 2006-04-03 2007-10-04 Rohde & Schwarz Gmbh & Co. Kg Synchronisieranordnung für die Hochfrequenz-Sender eines Gleichwellen-Netzes
US7738611B2 (en) * 2006-08-07 2010-06-15 Harris Stratex Networks, Inc. Remote monitoring and calibration of system reference clock using network timing reference
US20080046409A1 (en) * 2006-08-21 2008-02-21 Adam Lieb Color searching for images
US7929907B2 (en) * 2006-11-09 2011-04-19 Comtech Ef Data, Inc. Timing recovery scheme for satellite backhaul link
CN101197610B (zh) * 2006-12-06 2011-09-21 中兴通讯股份有限公司 一种cdma基站网管系统时钟同步的方法
US8599861B2 (en) * 2010-06-03 2013-12-03 Kathrein-Werke Kg Active antenna array and method for relaying radio signals
JP4762380B1 (ja) * 2010-09-21 2011-08-31 スカパーＪｓａｔ株式会社 衛星時刻配信システム
US8670466B1 (en) 2010-12-22 2014-03-11 Applied Micro Circuits Corporation System and method for residence time calculation
US20120177027A1 (en) * 2011-01-06 2012-07-12 Atheros Communications, Inc. System and method for time synchronizing wireless network access points
IT1404180B1 (it) * 2011-02-28 2013-11-15 Screen Service Broadcasting Technologies S P A Metodo e sistema per sincronizzare sorgenti di tempo e frequenza, particolarmente per trasmissioni di dati video.
JP2014020814A (ja) * 2012-07-13 2014-02-03 Lighthouse Technology & Consulting Co Ltd 衛星測位システム及び測位補強信号生成方法
CN109391337B (zh) * 2017-08-11 2020-12-25 华为技术有限公司 一种同步方法、上报方法以及对应装置
US10785553B2 (en) 2018-09-28 2020-09-22 Apple Inc. Hinge for cases that store wireless listening devices
JP7645361B2 (ja) 2021-03-31 2025-03-13 株式会社Ｎｔｔドコモ 無線中継装置および無線中継方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128465A (en) * 1961-07-27 1964-04-07 Nat Company Inc Timing synchronization by radio frequency communication
SE435438B (sv) * 1982-12-09 1984-09-24 Ericsson Telefon Ab L M Forfarande for instellning av radiosendare pa samtidig sendning
FI71452C (fi) * 1985-04-10 1986-12-19 Arvo Mustonen Synkroniseringsfoerfarande foer ett lokalt t ex riksomfattandepersonsoekarnaets radiosaendare
DE3514182A1 (de) * 1985-04-19 1986-10-23 Basf Ag, 6700 Ludwigshafen Elektrophotographisches aufzeichnungsmaterial
US4696052A (en) * 1985-12-31 1987-09-22 Motorola Inc. Simulcast transmitter apparatus having automatic synchronization capability
US4696051A (en) * 1985-12-31 1987-09-22 Motorola Inc. Simulcast transmission system having automtic synchronization
US4718109A (en) * 1986-03-06 1988-01-05 Motorola, Inc. Automatic synchronization system
US4882739A (en) * 1988-01-26 1989-11-21 Computer Sports Medicine, Inc. Method for adjusting clocks of multiple data processors to a common time base
US4972410A (en) * 1989-07-20 1990-11-20 Electrocom Automation, Inc. Method and apparatus for controlling signal coherency in simulcast systems
US5014344A (en) * 1990-03-19 1991-05-07 Motorola, Inc. Method for synchronizing the transmissions in a simulcast transmission system

Also Published As

Publication number Publication date
DE69223797T2 (de) 1998-06-18
KR940703107A (ko) 1994-09-17
JP3451585B2 (ja) 2003-09-29
DE69223797D1 (de) 1998-02-05
ATE161669T1 (de) 1998-01-15
US5261118A (en) 1993-11-09
EP0606272B1 (fr) 1997-12-29
JP2004007418A (ja) 2004-01-08
KR960012481B1 (ko) 1996-09-20
EP0606272A4 (en) 1994-09-21
EP0606272A1 (fr) 1994-07-20
CA2120528A1 (fr) 1993-04-15
WO1993007682A1 (fr) 1993-04-15
JPH06511366A (ja) 1994-12-15

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